A "straggler" refers to someone or something that is left behind or falls behind from a group. It is often used to describe a person or an animal that is slow or lags behind others. Full definition
Researchers using data from Hubble's now - retired Wide Field Planetary Camera 2 (WFPC2) have identified two types of blue stragglers in Messier 30: those that form in near head - on collisions with one another and those that are in twin (or binary) systems where the less massive star siphons «life - giving» hydrogen from its more massive companion. (messier-objects.com)
They're usually put to the Commons late at night, at the end of the day's business, when there's a handful of stragglers left. (politics.co.uk)
Blue stragglers in star clusters seem to rejuvenate themselves by consuming their neighbors. (sciencemag.org)