How do I solve 19 across in Times Cryptic 29147?

Question

Accepted Answer

19 across reads "Uncertain period after expulsion of old member" (4 letters); the answer is LIMB. It's a deletion clue: start with a word the clue points to, then drop one or more letters. Indicators include 'endlessly' (lose the last letter), 'beheaded' (lose the first), or 'heartlessly' (lose the middle). The full step-by-step breakdown is on this page.

Uncertain period after expulsion of old member (4)

19A — Uncertain period after expulsion of old member (4) — LIMB